Go & Fun Green Energy has been confirmed as the new main sponsor of Team Honda Gresini's MotoGP and Moto3 entries for 2013, 2014 and 2015. The team's new livery was revealed on the eve of the first winter test session in Valencia. Go & Green Fun Energy, an energy drink brand sold in Europe, the Middle East and Africa, replaces San Carlo, the team's longstanding main sponsor.San Carlo's deal with the team ended at the Valencia Grand Prix, the last event of the 2012 MotoGP season, on Sunday.Bruno Bollini of Go & Green Fun Energy said of the new three-year deal: “It is a source of great personal and professional pride to start this partnership with Team Honda Gresini. The project, which we have been working on with determination, is part of a plan to develop Erba Vita's presence the in the world of sport."Erba Vita, the brand's parent company, produces health products, herbal medicines and food supplements."With this in mind," Bollini added, "we have created Go & Fun Green Energy Drink and a line of products specifically for the sports market. Go & Fun is synonymous with dynamism, fun, quality, innovation and the power of nature, elements that we share in common with this special team. "I am sure that these will be exciting years ahead and after celebrating success today I am sure this will be the first of many.” Team principal Fausto Gresini said: "We are sure Go & Fun Green Energy can give our team a natural boost in the future. We are on the verge of an exciting new era in MotoGP and Moto3 so to have such a major new partner believing in our team is extremely important for us.”In October, Gresini confirmed that rider Alvaro Bautista will continue with the team in 2013.